Legendary Reliability UP FOR ANYTHING

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I-4 Four Strokes

Digital: 200 hp, 150 hp

Mechanical 200 hp, 150 hp

There’s a good reason why the legendary Yamaha F150 has enjoyed over a decade of unrivaled popularity. Powerful, light, nimble and compact, boaters know that its proven reliability is unmatched for everything from pontoons to flats boats to deep-V hulls. In fact, its versatile technology inspired the F200 and has served as the reliable foundation for remarkable advancements for both models. Whether your rigging is digital or mechanical, the entire lineup is compatible with your control preference. Plus, new integrated steering lets boaters hit the water with responsive performance, a cleaner bilge and more space on the boat for storage and comfort. Add in the sleek, modern cowling design and digital models now available in pearlescent white, and the I-4s just keep getting better and better, year after year.

Owners Manuals

Compatible controls for every platform

The F200 and F150 are available with either digital or mechanical controls and even our next generation boat control system Helm Master^® EX. In addition, the 26-inch mounting centers and bolt pattern on these models are the same as those on previous two-stroke models, making it easy for you to step up or down in horses without having to replace your rigging.*

* Compatibility and equipment condition dependent.

POWER & PERFORMANCE

Impressive Power-to-Weight

A proven 16-valve DOHC In-Line design, with four valves per cylinder maximizes efficiency and power. It also streamlines design, giving the F200 impressive power-to-weight.

Optimum Power

Precision Multi-Point Electronic Fuel Injection and long-track intake system combine to maximize power and fuel efficiency across the line of In-Line Fours.

Better Charging

With up to 50-amp alternators, our In-Line Fours provide plenty of power for a range of electronics, which comes in handy, now that they're all compatible with digital controls.

Quick Acceleration

A 10mm Offset Crankshaft allows for larger intake volume design. Four tuned intake tubes boost torque in low and mid-speed ranges for quick acceleration.

Powerful Hole Shot

The Composite Intake Manifold is a lightweight, compact design, making these engines very versatile. Long Tube Intake Tracks are tuned to increase airflow, boosting low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smoother operation.

Reliability & Durability

Corrosion Resistance

Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha In-Line Four-Stroke engines

Convenience & Control

Integrated Steering

New integrated steering gives you responsive control, a cleaner bilge and more space and storage on your boat.
Repower Ready

26-inch mounting centers and a bolt pattern that matches previous two strokes make In-Line Fours flexible for most repowers
Variable Trolling

Our entire I-4 series has a user adjustable trolling speed. This allows for precision adjustment of trolling in 50-RPM increments when equipped with a Yamaha digital gauge. Trolling range varies based on model.
Easy Engine Flushing

A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.
Quieter Operation

Yamaha's Shift Dampener System greatly reduces the noise commonly associated with shifting gears. Using a special design and components, much of the force of shifting is absorbed, resulting in far quieter and smoother operation.

In-line 4 Videos:

Yamaha In-Line Four Technology

IN-LINE 4 200 hp

With impressive power-to-weight, volumetric efficiency and integrated steering, this I-4 is the perfect, lightweight 200-hp solution for small- to medium-size boats. Its unique Variable Camshaft Timing (VCT) improves intake and exhaust efficiency and boosts torque throughout the rev range.

Compatible with mechanical, digital or Helm Master^® EX boat controls
Comes with integrated electro-hydraulic steering for digital models and integrated hydraulic steering for mechanical models
Runs on economical 89 octane
Only 525 pounds (20” shaft DEC model)
20” or 25” shaft options (LH rotation available in 25” shaft digital control)
50-amp alternator provides plenty of power for onboard electronics
Digital F200 available exclusively in new pearlescent white
Mechanical F200 available in signature Yamaha gray

Controls

Gauges

Prop Selector

IN-LINE 4 150 hp

The F150 is one that started it all and it’s more popular than ever. Powerful, light and compact, it’s mechanical or digital compatible and uses integrated steering, making it more streamlined and responsive than ever before.

Compatible with mechanical, digital or Helm Master® EX boat controls
Comes with integrated electro-hydraulic steering for digital models and integrated hydraulic steering for mechanical models
Only 520 pounds (20” shaft DEC model)
Available in 20” or 25” shafts
Powerful 50-amp alternator (2.8-liter digital) or 35-amp alternator (2.7-liter mechanical)
Digital F150 available in new pearlescent white and signature Yamaha gray
Mechanical F150 available in signature Yamaha gray

Controls

Gauges

Prop Selector

Specs & Compare

200 hp
150 hp

Engine Comparison

Engine Type	Inline 4
Displacement	2.8L
Bore x Stroke	96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower	200hp @ 5500 rpm
Full Throttle RPM Range	5000 ~ 6000 rpm
Alternator Output at W.O.T.	50 Amp
Compression Ratio	10.3:1
Fuel Induction System	EFI
Weight †	Mechanical - 234 kg (516 lbs) / DEC - 238 kg (525 lb)
Recommended Fuel	Octane 89
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	Yamaha 10 Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating	3-Star
Exhaust	Through Propeller
Intake	16-valve
Ignition	TCI Microcomputer
Spark Plug	NGK-LFR6A-11
Alternator Output	50 Amp
Starting System	Electric
Lubrication	Wet Sump
Engine Oil Capacity	4.5L/4.3L w/without filter
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	1.86:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	20" / 25"
Degree of Tilt	70°
Degree of Trim	-4° through +16°
Mounting Centers	26"
Steering Angle (maximum)	30° from center, either direction
Warranty	Limited 3 Year Limited Pleasure Boat - 1 Year Limited Commercial

† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

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Engine Comparison

Engine Type	Inline 4
Displacement	2.7L (Mechanical) / 2.8L (DEC)
Bore x Stroke	94 x 96.2 (3.70 x 3.79in) / 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower	150hp @ 5500 rpm
Full Throttle RPM Range	5000 ~ 6000 rpm
Alternator Output at W.O.T.	35 / 50 Amp
Compression Ratio	9.0:1 / 10.3:1
Fuel Induction System	EFI
Weight †	20” Mechanical 231kg (509 lbs) 20” DEC 237kg (522 lbs)
Recommended Fuel	Octane 87 / Octane 89
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	Yamaha 10 Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating	3-Star
Exhaust	Through Propeller
Intake	16
Ignition	TCI Microcomputer
Spark Plug	NGK-LFR6A-11 / LFR5A-11
Alternator Output	35 / 50 Amp
Starting System	Electric
Lubrication	Wet Sump
Engine Oil Capacity	4.5L / 4.3L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.00:1
Gear Shift	F-N-R
Shaft Length	20" / 25"
Degree of Tilt	70°
Degree of Trim	-4° through +16°
Mounting Centers	26"
Steering Angle (maximum)	30° from center, either direction
Warranty	Limited 3 Year Limited Pleasure Boat / 1 Year Limited Commercial

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View Bulletins for all Models

Perf. Bulletins

200 hp
150 hp

Manufacturer	PowerMatched	Boat Model	Engine	Configuration	Bulletin